Gold Member Since 2007
Audited Supplier
Ningbo Ville Electric Co., Ltd.

Power Transformer, Transformer, Auto Transformer manufacturer / supplier in China, offering Power Transformer, Capacitor Voltage Transformer, Water Cooled High Current Cable and so on.

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Power Transformer

FOB Price: US $80,000-2,000,000 / Piece
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $80,000-2,000,000/ Piece
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Production Capacity: 1/6monthes
Transport Package: Wooden Cases
Payment Terms: L/C, T/T, D/P, Western Union

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Basic Info
  • Model NO.: SFZ 120000/230/35KV
  • Phase: Three
  • Cooling Method: Oil-immersed Type Transformer
  • Test Certification: Kema Transformer Test
  • Specification: IEC Standard
  • HS Code: 8504231200
  • Application: Power, Electronic, Instrument, Rectifier
  • Core: Core-type Transformer
  • Winding Type: Two-winding Transformer
  • Trademark: ville
  • Origin: Ningbo
Product Description
Power Transformer
230-242kV on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps. It is advantageous in low loss, low noise, low voltage partial discharge and high anti short-circuit capacity. The dynamical and thermal stability of this transformer, of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure. The transformer tank used wave form shell, has very nice appearance, the core is with D shape yoke and 45 angle seaming. The core and oil box are well fixed and well protected on moving.
Three-phase dual winding oil immersed power transformer with OLTC
Type: SFZ-120000/230
Rated voltage: 230/34 kV
Rated capacity: 100000/120000kVA
Rated voltage ratio: 230± 8× 1.25%/34kV
Rated current: 301/2038A
Phase number: Three
Rated frequency: 50 Hz
Connection: Ynyn0(d11)
Voltage regulating method: Neutral point on-load Regulating
Short circuit impedance: 9.5%(10MVA)
Cooling mode: ONAN/ONAF
Power Transformer
Power Transformer
Power Transformer


Lightning impulse withstand voltage(kV peak value)1minMain frequency withstand voltage
(kV RMS)
Full waveChopped wave
High voltage side10501175460
Neutral point of high voltage  (1050)
  ( 460 )
Low voltage side17018570
Neutral point of low voltage170
70


  14 th. Insulation Level: A                                                                                                                                                                                                                                                                                                                               
  15 th. Field strength between transformer winding turns is no more than 2kV/mm                   
  16 th. Transformer loss (under 75) no-load current and efficiency                                                             
          No-load Loss: 92 kW              According to IEC standard                                                                                                                                   
                  Load Loss: 356 kW                According to IEC standard                                                                                                                                       
                  No-load current: 0.3 %          According to IEC standard                                                                                                                                       
  17 TH. Radio interference and corona
          Under the Maximum phrase voltage, corona is not visible from outgoing terminal in the night of clear day at outdoor. Radio interference voltage is no more than 2500Uv                                                                                                                                                                                                                                                           
  18 th. Overloading capability                                                                                                                                                                                                                                                                                                                                       
                      Short-time overloading capability of transformer and overload running time are as fol          low:
Over current30456075100
Allowable running time min12080452010
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